by Carrie Stevenson | Mar 26, 2019
One of the incredible benefits of living in Florida is exposure to the biodiversity of our wildlife population. From ordinary squirrels and mockingbirds to the more exotic panthers and migratory tropical birds, it is rare one can step outside the house without seeing or hearing wildlife of some variety. One of the practices we “preach” here at Extension is to provide habitat for wildlife in our yards and gardens. While cities and neighborhoods are human-centric, we share these spaces with thousands of wild animals, birds, fish, and insects and should always consider them in our actions.
Attracting birds and butterflies are popular pastimes, and Extension faculty can provide a tremendous amount of information on their preferences and food sources. However, a few unsung critters deserve homes and space as well. Just yesterday, I took a call from a gentleman who was excited to discover a small colony of bats roosting in a tree on his property. He was looking for ways to encourage them to stay, because he realized the countless benefits they provide in free insect control. Many people are nervous around bats of because of their unpredictable, irregular night flight pattern and association with scary stories. However, an average Florida bat can eat 1,000 insects a night, keeping pest populations down, reducing mosquito-borne disease, and saving millions of dollars in crop damage.
In our demonstration garden today, I was delighted to walk up on a black racer sunning itself in the grass. These common garden snakes provide valuable pest control of rats and mice, and are not aggressive or venomous. The fear of snakes often comes from the surprise of finding one unexpectedly, so always be alert and observant when outdoors. Respect for these creatures and a basic working knowledge of common venomous and nonvenomous species can go a long way towards calming one’s nerves. An excellent resource for snake identification in north Florida is this online guide. Like many snakes, this particular snake had been in tall grass, so it is always wise to be cautious in those areas.
This black racer sunning in the grass must have gotten the message about utilizing habitat provided for wildlife! Photo credit: Carrie Stevenson, UF IFAS Extension
To attract wildlife, learn about their life cycle and food sources, and provide shelter, water, and food for the species you are interested in attracting. Keep in mind that inviting wildlife may also draw their predators, but know that this is part of the larger cycle. Always keep safety in mind, and if necessary keep tall vegetation and deep water to a minimum in play areas frequented by young children. The benefits of providing food and shelter for wildlife are countless for human observers and wildlife alike.
by Mary Salinas | Feb 26, 2019
You never know what you’ll find when you start looking closely in your garden. I was puzzled as to why there were three dead leaves hanging together on my sweetbay tree when all the other leaves looked so nice and healthy. On further investigation, I found a cocoon was made by binding the leaves together and it was firmly attached to the branch with silk.
The hanging dead leaves are a perfect hiding place for the cocoon of the sweetbay silkmoth. Photo credit: Mary Salinas.
This is the cocoon of the Sweetbay silkmoth, Callosamia securifera. Adult females lay their eggs on the native sweetbay tree, Magnolia virginiana, as the caterpillars only feed on sweetbay leaves. The trees tolerate having a few leaves eaten so there is no need to pick off the caterpillars if you find them. Local birds may do that for you as they rely on an abundance of caterpillars to feed their baby birds.
See photos of this beautiful moth with more details on its life cycle.
And then explore Gardening with Wildlife on UF/IFAS Gardening Solutions.
by Carrie Stevenson | Feb 26, 2019
Compost bins can be built or purchased and provide an easy means of recycling food and yard waste into valuable soil for a garden. Photo credit: Carrie Stevenson, UF/ IFAS Extension
What better New Year’s resolution could there be than to start recycling and do our part to preserve our natural resources? By composting yard and kitchen waste, we can also get a jump-start on our spring gardening by creating your own mulch and fertilizer. Done properly, raw compost material can transform into nutrient-rich soil in just six weeks! A free source of “slow release” nutrients, compost also loosens tight, compacted soils and helps our often-sandy soils hold nutrients.
So what is compost? Essentially, it is what’s left of organic matter after it’s been thoroughly decomposed by microbes. Among the common compostable organic materials are leaves, grass clippings, twigs, pine straw, and vegetable/fruit peelings and coffee grounds. When using these items, alternate by using brown (leaves, straw) and green materials (grass clippings, vegetables) in the compost bin to provide adequate carbon and nitrogen. Table scraps containing meat, eggs or oils are not recommended because they can draw rodents and cause an odor. Eggshells are OK, but in general, use only kitchen scraps that are either plants or paper.
The organisms doing the actual composting are microscopic bacteria and fungi, along with earthworms. The microbes need water, oxygen and nutrients to thrive. Rainfall will provide most of the needed moisture, although you may need to hand water the pile on during dry times. For the best results, keep the pile moist but not soggy; if you pick up a handful it should not crumble away nor drip water when squeezed.
To move oxygen through the pile, increasing decomposition and preventing odors, turn the pile on a regular basis with a pitchfork or rake. Some companies sell compost bins in moving cylinders that can be turned with a handle. The process of decomposition will generate extreme heat (over 150°F in the summer) within the pile, which can kill weed seeds and disease-causing organisms.
Done correctly, composting does not smell bad, is very easy to do, and is a great way to do something good for the planet, your yard, and your wallet! Learn more about composting at this University of Florida Extension article.
by Larry Williams | Jan 14, 2019
Ice on Satsuma fruit from January 2014 ice storm in Crestview, FL. Photo credit: Larry Williams
Northwest Florida winters can be a rollercoaster ride of temperatures. One week it dips to freezing for a short time and the next week it rises to spring-like temperatures. We need to hold on for this ride of up and down temperatures but not over react too soon.
Following the sudden ride down to the lower temperatures, we may think winter is over. But we don’t see the next drop in temperatures that’s coming, as we are experiencing the ride upwards in temperatures.
On average, it’s not until we reach mid-March that we expect our last killing frost. A killing frost is heavy enough to kill tender plant growth. And, we can have light frosts well into the latter part of March and into early April. This is particularly true in the more northern portions of our Panhandle Counties.
The main point is to not get spring fever too early and encourage new plant growth by pruning or fertilizing too soon.
When landscape plants freeze, the first impulse may be to get out the pruning shears and cut away dead and dying leaves and branches. But this isn’t a good idea. Pruning can force new tender growth that is more likely to be injured by the next freeze. And, you can’t tell how much damage has been done until plants start new growth in spring. If you prune immediately after a freeze, you may cut away live wood that doesn’t have to be lost. Also, leaves and branches, which have been killed, can help protect the rest of a plant
Cold injury to lawn that happened March 31 in Crestview, FL. Photo credit: Larry Williams
against further cold injury.
Some people want to “jump start” their lawns before our weather will allow our grasses to grow. Waiting allows for more efficient use of the lawn fertilizer. You will not injury your lawn by
waiting but you can certainly injure your lawn by fertilizing too early.
So, have patience, allow your lawn to green up on its own and then fertilize, even if it’s not until April or May.
Finally, be a little philosophical. If you do lose one or two of your tender ornamentals, so what? Worse things could happen. And now you have a chance to add something new, perhaps some species native to our area that are not as subject to cold damage.
Even with this winter/spring rollercoaster ride, with thousands of plants to choose from and a generally mild climate, who can complain?
by Carrie Stevenson | Jan 7, 2019
The Chickasaw plum is covered in beautiful small white flowers in the spring. Photo credit: UF IFAS
The native Chickasaw plum is a beautiful smaller tree (12-20 ft mature height) that is perfect for front yards, small areas, and streetscapes. True to its name, the Chickasaw plum was historically an important food source to Native American tribes in the southeast, who cultivated the trees in settlements well before the arrival of Europeans. They typically harvested and then dried the fruit to preserve it. Botanist-explorer William Bartram noted the species during his travels through the southeast in the 1700’s. He rarely saw it in the forests, and hypothesized that it was brought over from west of the Mississippi River.
One of the first trees to bloom each spring, the Chickasaw plum’s white, fragrant flowers and delicious red fruit make it charmingly aesthetic and appealing to humans and wildlife alike. The plums taste great eaten fresh from the tree but can be processed into jelly or wine. Chickasaw plums serve as host plants for the red-spotted purple butterfly, and their fruit make them popular with other wildlife. These trees are fast growers and typically multi-trunked.
Almost any landscape works for the Chickasaw plum, as it can grow in full sun, partial sun, or partial shade, and tolerates a wide variety of soil types. The species is very drought tolerant and performs well in sandy soils.
The plum is in the rose family and has thorns, so it is wise to be aware of these if young children might play near the tree.
Winter is ideal tree-planting time in Florida. While national Arbor Day is in spring, Florida’s Arbor Day is the 3rd Friday of January due to our milder winters. This year, Escambia County’s tree giveaway will include Chickasaw plums, so if this tree sounds like a great addition to your landscape, come visit us on January 19 and pick one up.
For more information about tree selection in northwest Florida, contact your local county Extension office.
by Beth Bolles | Jan 3, 2019
Shrubs can serve many purposes in a landscape and have been used in both mass plantings and as accent features. They can include plants that offer colorful blooms, food for pollinators, and screens for less than favorable views.
We tend to think that shrubs will be permanent feature in our landscapes, because many are hardy and adapted to our climate. Like any other plant you may choose for your yard, shrubs may not live forever and there are a wide variety of reasons a shrub may need replacement after years of solid performance.
Let’s use any example from my own yard of the Dwarf yaupon holly, Ilex vomitoria ‘Nana.’ Back in 2001, I planted three hollies, spaced with plenty of room to grow, in a border area of my landscape. The plants grew well forming mounds about 3.5 feet high and 4 feet wide. Since the ‘Nana’ holly is a naturally mounding shrub, it did not require pruning and once established, rainfall supplied needed water.
Yaupon holly with dieback after 17 years in a landscape. Photo by Beth Bolles, UF IFAS Extension Escambia County
Over the past year, several areas of branch dieback have developed in all plants. After finally deciding that the dieback was unattractive enough to warrant plant removal, I began cutting the plants back. I discovered dead interior branches, girdling roots, and some internal stem discoloration. In other words, there are many factors that have led to poor plant performance. Another issue is a large Loropetalum hedge (planted by my neighbor) that shades one side of the plant.
Girdling roots often develop when rootballs have not been properly prepared during installation. Photo by Beth Bolles, UF IFAS Extension Escambia County
What could I have done to help these plants stay healthier for many more years? I could have prepared the rootball better for planting by shaving off the edges or supplied a little fertilizer on occasion in my sandy soil. These practices may have extended the life of the plants for several more years, but they may not have made a difference. Sometimes shrubs decline and die. I am accepting that not everything performs at an outstanding level in our climate. Also, there is an end point for some of my favorite plants in the yard. Some may outlive me while others thrive for a few years or a decade or so.
The bright side of loss of my Yaupon hollies is that I get to plan for a feature for the new year. Maybe something for pollinators and birds to last the next 17 years.
